A1Armory Blog

How to Mill Out An AR-15 80% Lower Receiver If you’ve done any research into 80% AR-15 lowers, you probably already know some of the benefits that they offer: no background checks, no transfer fees or NICS fees, and no unnecessary money spent to recoup a manufacturer’s branding and marketing costs – not to mention the satisfaction of knowing that you built your lower with your own two hands. If you’re nervous about milling your own lower for the first time, that’s understandable – it can …